30. Because of the bad weather, ______ a great holiday turned out to be a disaster.
(A) it could be
(B) that it could be
(C) what could have been
(D) which that could have been
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統計: A(254), B(87), C(241), D(77), E(0) #2378935
統計: A(254), B(87), C(241), D(77), E(0) #2378935